From c0e75a52504a3d31bcca0d4c39745d4d6c1fe917 Mon Sep 17 00:00:00 2001
From: Kitsune Ral <Kitsune-Ral@users.sf.net>
Date: Mon, 6 Aug 2018 12:01:22 +0900
Subject: RoomMemberEvent: a set of is*() facility methods

---
 lib/events/roommemberevent.cpp | 32 ++++++++++++++++++++++++++++++++
 lib/events/roommemberevent.h   |  5 +++++
 2 files changed, 37 insertions(+)

diff --git a/lib/events/roommemberevent.cpp b/lib/events/roommemberevent.cpp
index 79e4af2d..eaa3302c 100644
--- a/lib/events/roommemberevent.cpp
+++ b/lib/events/roommemberevent.cpp
@@ -48,6 +48,7 @@ namespace QMatrixClient
             return MembershipType::Undefined;
         }
     };
+
 }
 
 MemberEventContent::MemberEventContent(const QJsonObject& json)
@@ -68,3 +69,34 @@ void MemberEventContent::fillJson(QJsonObject* o) const
     if (avatarUrl.isValid())
         o->insert(QStringLiteral("avatar_url"), avatarUrl.toString());
 }
+
+bool RoomMemberEvent::isInvite() const
+{
+    return membership() == MembershipType::Invite &&
+            (!prevContent() || prevContent()->membership != membership());
+}
+
+bool RoomMemberEvent::isJoin() const
+{
+    return membership() == MembershipType::Join &&
+            (!prevContent() || prevContent()->membership != membership());
+}
+
+bool RoomMemberEvent::isLeave() const
+{
+    return membership() == MembershipType::Leave &&
+            prevContent() && prevContent()->membership != membership() &&
+            prevContent()->membership != MembershipType::Ban;
+}
+
+bool RoomMemberEvent::isRename() const
+{
+    auto prevName = prevContent() ? prevContent()->displayName : QString();
+    return displayName() != prevName;
+}
+
+bool RoomMemberEvent::isAvatarUpdate() const
+{
+    auto prevAvatarUrl = prevContent() ? prevContent()->avatarUrl : QUrl();
+    return avatarUrl() != prevAvatarUrl;
+}
diff --git a/lib/events/roommemberevent.h b/lib/events/roommemberevent.h
index f3e4f53a..db25d026 100644
--- a/lib/events/roommemberevent.h
+++ b/lib/events/roommemberevent.h
@@ -75,6 +75,11 @@ namespace QMatrixClient
             bool isDirect() const { return content().isDirect; }
             QString displayName() const { return content().displayName; }
             QUrl avatarUrl() const      { return content().avatarUrl; }
+            bool isInvite() const;
+            bool isJoin() const;
+            bool isLeave() const;
+            bool isRename() const;
+            bool isAvatarUpdate() const;
 
         private:
             REGISTER_ENUM(MembershipType)
-- 
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